def bubbling_sorted(li):
    for i in range(len(li)-1):
        for j in range(len(li) - i-1):
            if li[j] > li[j+1]:
                li[j], li[j+1] = li[j+1], li[j]


if __name__ == '__main__':
    l = [3, 4, 1, 5, 9, 2, 7, 8, ]
    bubbling_sorted(l)
    print(l)